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11E > 4.7.3 Movement & Interaction- Acids &Alkalis > Flashcards

4.7.3 Movement & Interaction- Acids &Alkalis Flashcards

1
Q

A solution has a pH of 11. The concentration of H+ ions increases by a factor of 10. What is the new pH?

A

10

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2
Q

How can the solid salt be collected from a soluble solution?

A

Heat it

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3
Q

In a reaction profile for an exothermic reaction where will the energy level for reactants be compared to the level for products?

A

Higher

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4
Q

In which type of reaction does a temperature increase occur?

A

Exothermic

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5
Q

What is an alkali?

A

A soluble base

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6
Q

What is the charge of a chlorine ion?

A

-2

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7
Q

What is the charge on a hydrogen ion?

A

+1

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8
Q

What salt will be produced when hydrochloric acid reacts with magnesium carbonate?

A

magnesium chloride

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9
Q

What type of current is used in mains electricity?

A

a/c

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10
Q

What type of ions do acids produce in aqueous solutions?

A

H+

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11
Q

What type of ions do metals form?

A

Positive

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12
Q

What will the products of this reaction be lithium + magnesium oxide –>

A

magnesium + lithium oxide

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13
Q

Which gas is tested for using a lit splint?

A

Hydrogen

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14
Q

Which is the correct order of reactivity?

A

Lithium, sodium, magnesium, copper

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15
Q

Which of the following is not an example of a strong acid?

A

Ethanoic

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16
Q

Which of the following is not an example of a weak acid?

A

Nitric

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17
Q

What type of ion do all metals produce?

A

Positive ions

18
Q

What are the products of a reaction between an acid and a metal?

A

A salt and Hydrogen

19
Q

Describe the test for hydrogen.

A

A burning spill is held in the gas and makes a squeaky pop sound.

20
Q

What are the products of a reaction between an acid and a metal carbonate?

A

A salt, water and carbon dioxide

21
Q

Describe the test for carbon dioxide.

A

Bubbling carbon dioxide through limewater turns it from clear to cloudy

22
Q

How is the name of a salt determined?

A

The name of the metal and the name of the acid used.

23
Q

What type of salt will be produced by hydrochloric acid?

A

Chloride

24
Q

What type of acid is used to produced a nitrate salt?

A

Nitric acid

25
Q

What energy change occurs when bonds in reactants are broken?

A

Increase as energy is absorbed

26
Q

What energy change occurs when bonds in products are made?

A

Decrease as energy is given out

27
Q

What is an exothermic reaction?

A

A reaction where more energy is given out than taken in

28
Q

Give an example of an exothermic reaction.

A

Combustion
respiration
neutralisation

29
Q

What happens to temperature during an exothermic reaction?

A

Temperature increases

30
Q

What is an endothermic reaction?

A

A reaction that takes in more energy than it gives out

31
Q

Give an example of an endothermic reaction.

A

Photosynthesis
thermal decomposition

32
Q

What happens to temperature during an endothermic reaction?

A

Temperature decreases

33
Q

What ion do acids produce when dissolved in water?

A

H+

34
Q

Why is nitric acid described as a strong acid?

A

It fully ionises in water

35
Q

Give an example of a weak acid.

A

Citric
ethanoic
carbonic

36
Q

What does a concentration of 3M mean?

A

3 moles of acid is dissolved in one litre of water

37
Q

A solution has a concentration of 2.5M. Is this concentrated or dilute?

A

Dilute

38
Q

Explain your answer to Q5.

A

Concentrated solutions are above 5M

39
Q

Describe the properties of a 10M solution of ethanoic acid.

A

Weak & Concentrated

40
Q

Describe the properties of a 4M solution of sulphuric acid.

A

Strong, dilute acid

11E (24 decks)

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